PIC water sensor

[T.Jackson]

Get ready to run Sue.

[T.Jackson]

Any solicitors here interesting in a 6 million lawsuit?

Guaranteed win.

50/50

[The Master]

Any solicitors here interesting in a 6 million lawsuit?

Oh dear, what did you do?

[skimask]

Oh dear, what did you do?

Hi-jacked one too many threads with philosophical bovine defecate...
http://www.marlerblog.com/Cow-Pie-3.jpg

[T.Jackson]

Oh dear, what did you do?

Not a suspect.

Next.

[Nicmus]

Mister_e has a nice touch sensor I’m sure you can use to detect water.
You can change its sensitivity both software and hardware.
I used it for some other application and I’m sure it will work for you too.
All you need is a resistor and two parallel pieces of wire (ground and signal) for each sensor and n+1 I/Os for n sensors. You don’t want the wires too close to each other.
Just do a search for “touch sensor” and you’ll find his post.

Regards,

Nick

[The Master]

I think i understand it. It appears to be one of those capacitance type things mentioned earlier (like touchlamps). Im not sure if this would work well in my situation. The control circuit will be inside and the sensors will be outside so there will be a fairly long wire between them, im not sure if that would affect it at all because ive never tried anything like that before.

My prefered method is using the water to conduct between 2 wires but ill get some of those resistors so i always have that method as a backup.

[Nicmus]

You can build the sensor using a 10F or 12F PIC and remote it with only 3 wires (VDD, VSS and output). In this case you will need one PIC per sensor and your master controller.

Nick